Past the Edge
Copyright© 2026 by Robin M. Vale
Chapter 6: The Choice
Science Fiction Sex Story: Chapter 6: The Choice - Dylan and his mother Sophie wake deep inside an alien ship, torn from their ordinary lives by a blinding flash. What starts as an abduction becomes a test of endurance: an alien mind, alien rules, and only one person to trust — a slow-burn story of survival, power, and intimacy at the very edge of the known universe.
Caution: This Science Fiction Sex Story contains strong sexual content, including Ma/Fa Mult Coercion NonConsensual Reluctant Heterosexual Fiction Science Fiction Aliens Space Sharing Incest Mother Son Light Bond Rough Group Sex Polygamy/Polyamory Anal Sex Cream Pie First Massage Oral Sex Petting Size Illustrated AI Generated
He approached soundlessly, the tentacles behind his back coming alive, reaching for Sophie’s body like hungry snakes. Two of them coiled around her breasts, squeezing the soft flesh, twisting her nipples, which hardened instantly at the touch. Sophie shuddered, exhaling through her teeth, but did not pull away. Her eyes darted between her son and the xeno.
The alien settled on the edge of the bed within arm’s reach of them, his massive body looming over Sophie. His black eyes burned with curiosity and something else — perhaps pride that his specimens were learning their lessons so well.
That feeling, that word. The word had surfaced on its own and he did not like it. Pride implied involvement, and a researcher should not be involved with the object of study. He set the observation aside — later, he decided, he would figure out where the glitch had come from. There were more important matters now.
“Enjoying yourself?” he asked, addressing Dylan, a lazy smirk in his voice.
Dylan froze, feeling his cock pulse inside his mother, feeling her muscles clench around him in a rhythm that had become familiar. He raised his eyes to the alien, meeting his black gaze, and inside him fear, shame, and defiance warred.
“Yes,” he answered, and his voice came out steadier than he’d expected. “I like it.”
The alien grunted with satisfaction and shifted his gaze to Sophie. His hand slid over her shoulder, up to the nape of her neck, and he lifted her head gently but insistently, forcing her to meet his eyes. His tentacles kept playing with her breasts, squeezing and releasing her nipples, making her breath hitch.
“And you, mother,” he said, his voice dropping lower, more intimate. “Do you like feeling desired?”
Sophie looked into his black eyes, and inside her there was no fear — only a strange, effervescent warmth spreading through her body from his touch, from her son’s closeness, from the awareness of her own power over a situation she was beginning to accept.
“Yes,” she replied, her voice hoarse but without hesitation.
The alien tilted his head, and an expression that could be called approval crossed his face. His fingers slid across her cheek, brushing away a damp strand of hair, and he kept looking into her eyes, unwavering.
“What do you feel like in all this — a doll being played with, or something more?” he asked, and the question hung in the air, heavy and provocative.
Sophie exhaled, feeling a hot wave rise inside her. Her son’s cock pulsed inside her anus in time with her heartbeat, the tentacles played with her breasts, and the alien’s black eyes watched her with an expectation she no longer wanted to deny.
The alien paused, his black eyes boring into Sophie’s face, scanning every emotion that flickered across her features. The tentacles on her breasts continued their play — squeezing, releasing, twisting her stiff nipples, not letting her nervous system settle. Heat kindled in her lower belly, amplified by her son’s presence inside her, his pulsing in time with her heartbeat.
“Who are you, Sophie?” he repeated, his voice growing softer, almost intimate.
Sophie opened her mouth, but the words wouldn’t come. She felt broken and whole at the same time, destroyed and reborn. She could have said she was a victim, that she had no choice. But that would have been a lie, and they all knew it.
“I feel...” she began, and her voice faltered. “Alive. For the first time in a long time, I feel alive.”
The alien tilted his head, and something akin to respect flickered in his eyes.
“An interesting answer,” he said, a note of thoughtfulness in his voice. “You’re beginning to understand.”
He shifted his gaze to Dylan, who was still moving inside her slowly, rhythmically, not daring to stop without a command.
“You heard her, boy. She feels alive. And what do you feel?”
Dylan paused for a moment, gathering his thoughts. Inside him, shame, fear, and a strange, forbidden satisfaction he couldn’t control were at war.
“I feel like I want this, want to keep going,” he answered quietly but firmly. “Even if it’s wrong.”
The alien let out a low, vibrating sound, like laughter.
“You’re both beginning to understand. Good.”
He rose, and his tentacles released Sophie’s breasts, sliding down her belly to her hips. He stood before her, his massive cock looming over her face, hard, pulsing, covered in slick.
“Then let’s continue,” he said, and metal rang in his voice. “Are you ready, do you want me, mother?”
Sophie looked up at him, meeting his black eyes. Everything inside her tightened with anticipation and fear, but she knew the answer she had to give.
“Yes,” she breathed. “I want you.”
“Are you sure? You want a being from another world, you want to feel him inside you?” he said, his voice low and heavy.
The alien leaned closer, and his breath brushed her lips — warm, pungent, with a hint of resinous sweetness. His black eyes held hers without blinking, and in them danced reflections of the crimson light bouncing off the walls.
“Tell me,” he said, his voice deepening, thick as resin. “Are you sure you want to feel a being from another world inside you? Want to feel me fill you, stretch your cunt to the limit? Want to feel yourself filled with alien flesh?”
Sophie looked into his eyes and felt her own body respond to his words — pulsing in her lower belly, moisture running down the inside of her thigh, trembling in her knees. Her son’s cock was still inside her, warm, alive, and its pulsing mingled with her own heartbeat, creating a rhythm that made her dizzy. And through the haze, shame broke through: her son was inside her, heard her every word — yet what drew her now was not him. The pull toward the alien rose not on command but from somewhere within her; she didn’t dare call it desire — but she couldn’t deceive herself either. That was what burned quietest and deepest — he was right there, and a part of her answered not to him.
She licked her dry lips.
“I’ve never been sure of anything,” she replied, her voice hoarse but steady. “I wasn’t sure I’d survive when we got here. I wasn’t sure I could accept my son inside me. I wasn’t sure I could accept you.” She paused, meeting his gaze. “But every ‘I can’t’ turned out to be ‘I can.’ And right now I know one thing: my body wants this. It wants to feel you inside. Wants to be filled. Wants to be broken and put back together.”
The alien straightened slowly, and an expression that could be called satisfaction settled on his face. His massive cock swayed before her face, pulsing in anticipation.
“Then you’ll get what your body wants,” he said, his voice ringing with metal laced with promise. “Dylan, pull out of her.”
Dylan withdrew slowly, with obvious reluctance. Jealousy rose as a familiar dull ache — not as a blade, as before, but muffled: seeing her reach for another was strangely hard to bear. But he loved her — and so he simply watched. She sighed, feeling the emptiness inside, but it was temporary — she knew what was coming.
The alien took her by the hips, pulling her toward him, hooking her legs over his forearms. Tentacles supported her back. She was completely open, spread before him, knees drawn up to her chest. Her vagina glistened with oil and slick, and her anus was still stretched, wet, ready.
“You’ll have us both, mother,” he said, positioning himself between her parted legs. “First I’ll fill your cunt. Then your son will go back in your ass. You’ll be filled to the limit.”
He pressed the head of his massive cock against her vagina and slowly pulled her down, impaling her halfway in one long, smooth thrust.
Sophie arched, crying out — not from pain, but from the sudden sensation of fullness, of rawness, of her body stretching to take him. The alien paused for a moment, letting her adjust, then pulled her down the rest of the way, the head pressing against her cervix.
“Good,” he breathed, closing his eyes for a moment. “You’re getting used to it.”
He stayed inside her, motionless, and shifted his gaze to Dylan.
“Now it’s your turn, boy. Use the second hole. Slowly. We don’t want to hurt her.”
Dylan stepped closer, kneeling behind his mother as the alien held her suspended, her ass open and exposed. He pressed his cock to her anus, still wet with oil. He wrapped his arms around her from behind, meeting his mother’s eyes, seeking confirmation. She nodded, biting her lip.
He began to enter. The tight ring of muscle clenched around him, firm and hot, but the oil and earlier preparation had done their work — he slid inside, feeling the ring of muscle grip him while the walls of her vagina pulsed around the alien’s cock.
Sophie moaned — high, piercing, but there was no pain in the cry, only pure, blinding ecstasy at how her body took them both, how she was filled to the limit, how two cocks pulsed inside her, separated only by a thin wall of tissue.
“God,” she breathed, tilting her head back onto her son’s shoulder. “I feel you both. I feel each of you inside me.”
The alien began to slowly rock her body, and Dylan barely moved — there was no need. Two phalluses moved inside her in the same rhythm, filling, stretching, making the world narrow to the point of their union.
Sophie lost track of time. She drowned in sensations, in the pulsing, in the rhythm with which her body received two men. It no longer belonged to her — it had become an instrument, a vessel, receiving and giving pleasure.
At the edge of consciousness she heard her own voice crying out something incoherent, and felt the orgasm building inside her, rising like a wave, ready to crash over her head. She came, throwing her arms back, grabbing her son’s hair, arching like a bow, feeling her muscles clench around both cocks at once, pulsing in a rhythm that drove her mad.
To read the complete story you need to be logged in:
Log In or
Register for a Free account
(Why register?)
* Allows you 3 stories to read in 24 hours.